/*
 * Copyright 2011 The Rusted Roof, LLC.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package org.proteusframework.platformservice.grammar.expression;

/**
 * A string as in 'example_string'
 */
public class StringValue implements IExpression
{
    private String value = "";

    public StringValue(String escapedValue)
    {
        // romoving "'" at the start and at the end
        value = escapedValue.substring(1, escapedValue.length() - 1);
    }

    public String getValue()
    {
        return value;
    }

    public String getNotExcapedValue()
    {
        StringBuffer buffer = new StringBuffer(value);
        int index = 0;
        int deletesNum = 0;
        while ((index = value.indexOf("''", index)) != -1)
        {
            buffer.deleteCharAt(index - deletesNum);
            index += 2;
            deletesNum++;
        }
        return buffer.toString();
    }

    public void setValue(String string)
    {
        value = string;
    }

    public void accept(IExpressionVisitor expressionVisitor)
    {
        expressionVisitor.visit(this);
    }

    public String toString()
    {
        return "'" + value + "'";
    }
}
